1 Lurie Center for Autism, Massachusetts General Hospital, Lexington, MA; Down Syndrome Program, Division of Medical Genetics, Massachesetts General Hospital, Boston, MA; Department of Pediatrics, Harvard Medical School, Boston, MA.
3 Department of Psychiatry, Harvard Medical School, Boston, MA.
4 Lurie Center for Autism, Massachusetts General Hospital, Lexington, MA; Department of Psychiatry, Harvard Medical School, Boston, MA.
5 Down Syndrome Program, Division of Medical Genetics, Massachesetts General Hospital, Boston, MA; Department of Pediatrics, Harvard Medical School, Boston, MA.
6 Lurie Center for Autism, Massachusetts General Hospital, Lexington, MA; Department of Psychiatry, Harvard Medical School, Boston, MA. Electronic address: [email protected].